Spanish Social Security Reporting Rules Change from August 2026

Spanish Social Security reporting requirements changed on 1 August 2026. Employers now have six calendar days to report employee deregistrations and changes in employment data, while a separate obligation requires occupation codes to be supplied for workers already registered with the Social Security system.

Royal Decree 643/2026, published on 30 July, extends the previous reporting period for deregistrations and data changes from three to six calendar days following termination or the relevant change.

The additional time may reduce the risk of late filings, particularly where payroll administration is outsourced or information must pass through several levels of approval. However, companies should not treat the new period as a reason to delay their internal procedures. Late communication can still create discrepancies in payroll, contribution records and termination documents.

Employers must report occupation codes

The Royal Decree also introduces a one-off reporting requirement. Within six months of its entry into force, employers must communicate the principal or sole occupational code of every employee registered under any of their contribution account codes, unless that information has already been provided.

The code must correspond to the current Spanish National Classification of Occupations. It should not be confused with the company’s economic activity code or with an internal job title used by the parent company.

This distinction is particularly relevant for Spanish subsidiaries of international groups. Titles such as “business partner”, “country lead” or “operations specialist” may not correspond directly to a Spanish occupational category. Payroll providers will therefore need sufficient information about the employee’s actual functions rather than relying only on the title used in the group’s HR system.

Companies should review their active workforce, identify missing occupational codes and document the criteria used for classification. They should also establish who will communicate future changes when an employee moves to a substantially different role.

The reform provides more time for routine deregistration filings but simultaneously creates a new data-quality exercise for the whole workforce. Spanish subsidiaries should coordinate HR, payroll and their RED System representative well before the six-month period expires. Leaving the classification until the deadline may create avoidable errors, especially in companies with multiple contribution accounts or internationally standardized job descriptions.